All uplink ports on the IO Aggregator are configured in a single LAG (LAG 128). One of the Auto default features of the IO Aggregator is Link Tracking.

Link Tracking

By default, all server-facing ports are tracked by the operational status of the uplink LAG. If the uplink LAG goes down, the Aggregator loses its connectivity and is no longer operational; all server-facing ports are brought down.

Trouble shooting:

If installed Blade Servers do not have connectivity to a Top of Rack (ToR) switch, check the Link Status LED of uplink ports on the Aggregator. If all LEDs are ON, check the LACP configuration on the ToR switch that is connected to the Aggregator to ensure the Link Aggregation Control Protocol (LACP) is correctly configured.

For specific details on setting up LACP LAG on Dell Networking Switches refer to below articles: